:root {
  color-scheme: dark;
  --abyss: #070712;
  --abyss-2: #0d0a18;
  --cabinet: #21152f;
  --cabinet-hot: #382044;
  --cabinet-edge: #6a4570;
  --plinth: #43285a;
  --table: #12172b;
  --table-light: #29324d;
  --ink: #fff5d9;
  --ink-soft: #e7dcc6;
  --muted: #b7abc5;
  --muted-2: #8f88a8;
  --rune: #72f0ff;
  --gold: #ffd369;
  --gold-deep: #ad7732;
  --ruby: #ff547c;
  --sapphire: #5ac8ff;
  --emerald: #62eda0;
  --focus: #fff1a6;
  --danger: #ff7b57;
  --shadow-deep: rgba(0, 0, 0, 0.66);
  --shadow-soft: rgba(9, 4, 18, 0.46);
  --notch: 1rem;
  --radius: 1.4rem;
  --font-body: "Trebuchet MS", "Lucida Sans Unicode", Verdana, sans-serif;
  --font-display: Impact, Haettenschweiler, "Franklin Gothic Heavy", fantasy;
  --font-mono: "Courier New", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--abyss);
}

body {
  position: relative;
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  isolation: isolate;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 14%, rgba(114, 240, 255, 0.22), transparent 26rem),
    radial-gradient(circle at 84% 10%, rgba(255, 84, 124, 0.18), transparent 24rem),
    radial-gradient(circle at 72% 82%, rgba(98, 237, 160, 0.14), transparent 28rem),
    linear-gradient(135deg, #070712 0%, #130b1f 48%, #080a14 100%);
  font-family: var(--font-body);
  line-height: 1.5;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  z-index: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(255, 245, 217, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 245, 217, 0.045) 1px, transparent 1px),
    linear-gradient(135deg, transparent 0 45%, rgba(114, 240, 255, 0.08) 45% 48%, transparent 48% 100%);
  background-position: center;
  background-size: 44px 44px, 44px 44px, 88px 88px;
  mask-image: radial-gradient(circle at 50% 20%, black 0 34rem, transparent 78rem);
}

body::after {
  z-index: 0;
  opacity: 0.62;
  background:
    radial-gradient(circle, rgba(255, 211, 105, 0.75) 0 1px, transparent 2px) 12% 24% / 7rem 7rem,
    radial-gradient(circle, rgba(114, 240, 255, 0.55) 0 1px, transparent 2px) 78% 18% / 9rem 9rem,
    radial-gradient(circle, rgba(255, 84, 124, 0.48) 0 1px, transparent 2px) 44% 82% / 8rem 8rem;
  animation: pixel-drift 24s steps(8, end) infinite;
}

::selection {
  color: var(--abyss);
  background: var(--gold);
}

button {
  min-height: 2.9rem;
  border: 0;
  border-radius: 0;
  clip-path: polygon(
    0 var(--notch),
    var(--notch) 0,
    calc(100% - var(--notch)) 0,
    100% var(--notch),
    100% calc(100% - var(--notch)),
    calc(100% - var(--notch)) 100%,
    var(--notch) 100%,
    0 calc(100% - var(--notch))
  );
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), transparent 45%),
    linear-gradient(180deg, var(--cabinet-hot), var(--cabinet));
  box-shadow:
    inset 0 0 0 2px rgba(255, 245, 217, 0.14),
    inset 0 -0.45rem 0 rgba(0, 0, 0, 0.25),
    0 0.45rem 0 #100817,
    0 1rem 1.8rem var(--shadow-soft);
  cursor: pointer;
  font: 900 0.86rem / 1.15 var(--font-mono);
  letter-spacing: 0.045em;
  text-transform: uppercase;
  transition:
    filter 150ms ease,
    transform 150ms ease,
    box-shadow 150ms ease;
}

button:hover:not(:disabled) {
  filter: brightness(1.12) saturate(1.18);
  transform: translateY(-2px);
  box-shadow:
    inset 0 0 0 2px rgba(255, 211, 105, 0.38),
    inset 0 -0.45rem 0 rgba(0, 0, 0, 0.24),
    0 0.58rem 0 #100817,
    0 1.2rem 2.2rem var(--shadow-soft),
    0 0 1.4rem rgba(255, 211, 105, 0.16);
}

button:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow:
    inset 0 0 0 2px rgba(255, 211, 105, 0.3),
    inset 0 -0.18rem 0 rgba(0, 0, 0, 0.3),
    0 0.18rem 0 #100817,
    0 0.55rem 1.1rem var(--shadow-soft);
}

button:focus-visible,
#gameCanvas:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

button:disabled {
  cursor: not-allowed;
  filter: grayscale(0.45);
  opacity: 0.48;
  transform: none;
}

h1,
h2,
p {
  margin-top: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.shell {
  position: relative;
  isolation: isolate;
  z-index: 1;
  width: min(96rem, calc(100% - clamp(1rem, 4vw, 3rem)));
  margin: 0 auto;
  padding: clamp(0.75rem, 2vw, 2rem) 0 clamp(1.5rem, 4vw, 3rem);
}

.hero-panel,
.game-layout,
.control-panel,
.canvas-frame {
  box-shadow: 0 1.6rem 4rem var(--shadow-deep);
}

.hero-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) minmax(22rem, 0.72fr);
  gap: clamp(1rem, 2vw, 1.6rem);
  align-items: stretch;
  margin-bottom: clamp(0.8rem, 2vw, 1.3rem);
  padding: clamp(1.05rem, 3vw, 2rem);
  overflow: hidden;
  border: 1px solid rgba(255, 211, 105, 0.28);
  border-radius: calc(var(--radius) + 0.6rem);
  clip-path: polygon(
    0 1.25rem,
    1.25rem 0,
    calc(100% - 1.25rem) 0,
    100% 1.25rem,
    100% calc(100% - 1.25rem),
    calc(100% - 1.25rem) 100%,
    1.25rem 100%,
    0 calc(100% - 1.25rem)
  );
  background:
    linear-gradient(100deg, rgba(255, 211, 105, 0.12), transparent 34%),
    linear-gradient(130deg, rgba(114, 240, 255, 0.1), transparent 62%),
    linear-gradient(180deg, rgba(56, 32, 68, 0.92), rgba(16, 10, 28, 0.94));
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background:
    repeating-linear-gradient(135deg, transparent 0 18px, rgba(255, 245, 217, 0.18) 18px 20px),
    linear-gradient(90deg, rgba(255, 84, 124, 0.16), transparent 38%, rgba(98, 237, 160, 0.1));
  mix-blend-mode: screen;
}

.hero-panel::after {
  content: "";
  position: absolute;
  top: 1.2rem;
  right: clamp(1rem, 3vw, 2.2rem);
  width: clamp(3.7rem, 9vw, 7rem);
  aspect-ratio: 1;
  opacity: 0.92;
  background: conic-gradient(from 45deg, var(--gold) 0 25%, #7c4f88 0 50%, var(--rune) 0 75%, #21152f 0);
  box-shadow:
    1.15rem 1.15rem 0 rgba(255, 84, 124, 0.45),
    -0.8rem 2.3rem 0 rgba(98, 237, 160, 0.33),
    0 0 2.4rem rgba(114, 240, 255, 0.26);
  image-rendering: pixelated;
  transform: rotate(45deg);
}

.hero-copy,
.hud-grid {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.75rem;
  padding: 0.38rem 0.58rem;
  border: 1px solid rgba(255, 211, 105, 0.34);
  color: var(--gold);
  background: rgba(7, 7, 18, 0.42);
  box-shadow: inset 0 0 0 1px rgba(255, 245, 217, 0.08);
  font: 900 0.74rem / 1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 0.62rem;
  aspect-ratio: 1;
  background: var(--rune);
  box-shadow: 0 0 1rem var(--rune);
  transform: rotate(45deg);
}

h1 {
  max-width: 9.5ch;
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(3.1rem, 8.4vw, 8.2rem);
  font-weight: 900;
  line-height: 0.76;
  letter-spacing: 0.015em;
  text-transform: uppercase;
  text-wrap: balance;
  text-shadow:
    0 0.08em 0 #17091d,
    0.055em 0.055em 0 #765079,
    0.095em 0.095em 0 #090711,
    0 0 2.2rem rgba(255, 211, 105, 0.12);
}

h2 {
  margin-bottom: 0;
  color: var(--ink);
  font: 900 0.82rem / 1.1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lede {
  max-width: 52rem;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.6vw, 1.22rem);
  line-height: 1.62;
  text-wrap: pretty;
}

.hud-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem;
  align-self: stretch;
}

.hud-card {
  --accent: var(--gold);
  position: relative;
  min-width: 0;
  min-height: 6rem;
  overflow: hidden;
  padding: 0.88rem;
  clip-path: polygon(
    0 0.85rem,
    0.85rem 0,
    calc(100% - 0.85rem) 0,
    100% 0.85rem,
    100% 100%,
    0 100%
  );
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 21%, transparent), transparent 55%),
    linear-gradient(180deg, rgba(13, 10, 24, 0.86), rgba(7, 7, 18, 0.92));
  box-shadow:
    inset 0 0 0 1px rgba(255, 245, 217, 0.1),
    inset 0 -0.5rem 0 rgba(0, 0, 0, 0.18);
}

.hud-card::after {
  content: "";
  position: absolute;
  right: 0.7rem;
  bottom: 0.7rem;
  width: 0.58rem;
  aspect-ratio: 1;
  opacity: 0.85;
  background: var(--accent);
  box-shadow: 0 0 1.2rem var(--accent);
  transform: rotate(45deg);
}

.hud-energy {
  --accent: var(--gold);
}

.hud-lives {
  --accent: var(--ruby);
}

.hud-wave {
  --accent: var(--rune);
}

.hud-score {
  --accent: var(--emerald);
}

.hud-label {
  display: block;
  margin-bottom: 0.42rem;
  color: var(--muted);
  font: 900 0.7rem / 1 var(--font-mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hud-card strong {
  display: block;
  overflow: hidden;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 0.95;
  text-overflow: ellipsis;
  text-shadow: 0 0.1em 0 rgba(0, 0, 0, 0.54);
}

.game-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 25rem);
  gap: clamp(0.82rem, 1.45vw, 1.2rem);
  padding: clamp(0.72rem, 1.4vw, 1.18rem);
  border: 1px solid rgba(255, 211, 105, 0.22);
  border-radius: calc(var(--radius) + 0.55rem);
  background:
    linear-gradient(135deg, rgba(255, 211, 105, 0.09), transparent 28%),
    linear-gradient(180deg, rgba(33, 21, 47, 0.86), rgba(8, 8, 20, 0.92));
}

.game-layout::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0.7rem 1.4rem -1.4rem;
  background: linear-gradient(180deg, var(--plinth), #160b21 80%);
  clip-path: polygon(2% 0, 98% 0, 100% 82%, 88% 100%, 10% 100%, 0 82%);
  filter: drop-shadow(0 2rem 1.8rem rgba(0, 0, 0, 0.4));
}

.canvas-frame {
  position: relative;
  min-width: 0;
  padding: clamp(0.48rem, 1vw, 0.82rem);
  border: 1px solid rgba(114, 240, 255, 0.23);
  border-radius: calc(var(--radius) + 0.25rem);
  background:
    linear-gradient(135deg, rgba(255, 211, 105, 0.14), transparent 34%),
    linear-gradient(160deg, #533060, #241731 42%, #100b1d 100%);
}

.canvas-frame::before {
  content: "";
  position: absolute;
  inset: 0.4rem;
  border-radius: var(--radius);
  opacity: 0.12;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, transparent 0 18px, rgba(255, 245, 217, 0.45) 18px 20px),
    repeating-linear-gradient(0deg, transparent 0 18px, rgba(255, 245, 217, 0.28) 18px 20px);
}

.canvas-frame::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: 6%;
  bottom: -1.05rem;
  left: 6%;
  height: 1.1rem;
  background: linear-gradient(180deg, #5a3464, #25102f);
  clip-path: polygon(0 0, 100% 0, 92% 100%, 8% 100%);
  box-shadow: 0 1.1rem 1.6rem rgba(0, 0, 0, 0.34);
}

.canvas-bezel {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border-radius: var(--radius);
  background: #050712;
  box-shadow:
    inset 0 0 0 2px rgba(255, 245, 217, 0.08),
    inset 0 0 2.4rem rgba(114, 240, 255, 0.1),
    0 0.8rem 1.4rem rgba(0, 0, 0, 0.36);
}

.canvas-bezel::before {
  content: "";
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 245, 217, 0.11), transparent 16%, transparent 78%, rgba(0, 0, 0, 0.34)),
    repeating-linear-gradient(0deg, transparent 0 19px, rgba(255, 245, 217, 0.025) 19px 20px);
  mix-blend-mode: screen;
}

#gameCanvas {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  max-height: min(70vh, 760px);
  background: var(--table);
  cursor: crosshair;
  image-rendering: pixelated;
  touch-action: manipulation;
}

.status-line {
  position: absolute;
  z-index: 3;
  right: clamp(0.75rem, 1.5vw, 1.15rem);
  bottom: clamp(0.75rem, 1.5vw, 1.15rem);
  left: clamp(0.75rem, 1.5vw, 1.15rem);
  min-height: 2.75rem;
  margin: 0;
  padding: 0.75rem 0.9rem 0.75rem 2.4rem;
  border: 1px solid rgba(255, 211, 105, 0.42);
  clip-path: polygon(
    0 0.85rem,
    0.85rem 0,
    calc(100% - 0.85rem) 0,
    100% 0.85rem,
    100% 100%,
    0 100%
  );
  color: var(--ink);
  background: rgba(8, 7, 18, 0.86);
  box-shadow:
    inset 0 0 0 1px rgba(255, 245, 217, 0.07),
    0 0.7rem 1.6rem rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
  font: 800 0.87rem / 1.35 var(--font-mono);
}

.status-line::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0.92rem;
  width: 0.68rem;
  aspect-ratio: 1;
  background: var(--gold);
  box-shadow: 0 0 1.1rem rgba(255, 211, 105, 0.82);
  transform: translateY(-50%) rotate(45deg);
}

.control-panel {
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding: clamp(0.78rem, 1.2vw, 1rem);
  border: 1px solid rgba(255, 245, 217, 0.12);
  border-radius: calc(var(--radius) + 0.1rem);
  background:
    linear-gradient(150deg, rgba(114, 240, 255, 0.08), transparent 38%),
    linear-gradient(180deg, rgba(35, 23, 49, 0.96), rgba(13, 9, 24, 0.98));
}

.control-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.11;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255, 245, 217, 0.32) 1px, transparent 1px),
    linear-gradient(rgba(255, 245, 217, 0.24) 1px, transparent 1px);
  background-size: 18px 18px;
}

.panel-marquee,
.panel-section {
  position: relative;
  z-index: 1;
}

.panel-marquee {
  margin: 0 0 0.95rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid rgba(114, 240, 255, 0.25);
  color: var(--rune);
  background: rgba(3, 5, 12, 0.74);
  box-shadow:
    inset 0 0 0 1px rgba(255, 245, 217, 0.05),
    0 0 1.4rem rgba(114, 240, 255, 0.08);
  font: 900 0.72rem / 1 var(--font-mono);
  letter-spacing: 0.14em;
  text-align: center;
  text-transform: uppercase;
}

.panel-section + .panel-section {
  margin-top: 0.95rem;
  padding-top: 0.95rem;
  border-top: 1px solid rgba(255, 245, 217, 0.1);
}

.section-heading {
  margin-bottom: 0.68rem;
}

.section-heading h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-heading h2::before {
  content: "";
  flex: 0 0 auto;
  width: 0.58rem;
  aspect-ratio: 1;
  background: var(--gold);
  box-shadow: 0 0 0.8rem rgba(255, 211, 105, 0.62);
  transform: rotate(45deg);
}

.section-heading p {
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.4;
}

.gem-palette,
.button-grid {
  display: grid;
  gap: 0.65rem;
}

.gem-palette {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.gem-choice:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.button-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.gem-choice {
  --accent: var(--gem-color, var(--gold));
  position: relative;
  min-height: 4.35rem;
  overflow: hidden;
  padding: 0.78rem 0.76rem 0.72rem 3.05rem;
  color: var(--ink);
  text-align: left;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 18%, transparent), transparent 62%),
    linear-gradient(180deg, rgba(42, 30, 57, 0.98), rgba(16, 11, 27, 0.98));
}

.gem-choice::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 1rem;
  z-index: 1;
  width: 1.04rem;
  aspect-ratio: 1;
  border-radius: 0.18rem;
  background: var(--accent);
  box-shadow:
    0 0 0 0.22rem color-mix(in srgb, var(--accent) 18%, transparent),
    0 0 1.35rem var(--accent);
  transform: translateY(-50%) rotate(45deg);
}

.gem-choice::after {
  content: "";
  position: absolute;
  inset: 0.38rem;
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
  opacity: 0.36;
  pointer-events: none;
  clip-path: inherit;
}

.gem-choice span,
.gem-choice small {
  position: relative;
  z-index: 1;
  display: block;
  padding-left: 0;
}

.gem-choice span {
  font-weight: 900;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.gem-choice small {
  margin-top: 0.2rem;
  color: var(--muted);
  font: 800 0.74rem / 1.25 var(--font-mono);
}

.gem-choice[aria-pressed="true"] {
  color: #fffdf1;
  filter: saturate(1.18);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 34%, transparent), transparent 68%),
    linear-gradient(180deg, rgba(58, 38, 72, 0.98), rgba(20, 12, 31, 0.98));
  box-shadow:
    inset 0 0 0 2px color-mix(in srgb, var(--accent) 62%, rgba(255, 245, 217, 0.12)),
    inset 0 -0.42rem 0 rgba(0, 0, 0, 0.22),
    0 0.45rem 0 #100817,
    0 0 1.65rem color-mix(in srgb, var(--accent) 26%, transparent);
}

.gem-choice[aria-pressed="true"]::before {
  animation: gem-pulse 1.55s steps(2, end) infinite;
}

#startWaveButton {
  grid-column: 1 / -1;
  color: #160d1e;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.3), transparent 42%),
    linear-gradient(135deg, var(--gold), var(--rune));
  text-shadow: none;
}

#upgradeButton {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), transparent 45%),
    linear-gradient(180deg, #4a345d, #241731);
}

#mergeButton {
  background:
    linear-gradient(135deg, rgba(255, 84, 124, 0.28), rgba(98, 237, 160, 0.12)),
    linear-gradient(180deg, #392143, #191023);
}

#pauseButton[aria-pressed="true"] {
  color: #061016;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.28), transparent 42%),
    linear-gradient(135deg, var(--rune), var(--emerald));
}

#resetButton {
  background:
    linear-gradient(135deg, rgba(255, 123, 87, 0.32), rgba(255, 211, 105, 0.08)),
    linear-gradient(180deg, #452538, #1a0e1f);
}

.compact-stats dl {
  display: grid;
  gap: 0.5rem;
  margin: 0;
}

.compact-stats div {
  display: grid;
  grid-template-columns: minmax(5rem, 0.72fr) minmax(0, 1fr);
  gap: 0.8rem;
  align-items: center;
  padding: 0.58rem 0.68rem;
  border: 1px solid rgba(255, 245, 217, 0.09);
  background: rgba(7, 7, 18, 0.36);
  clip-path: polygon(0 0.55rem, 0.55rem 0, 100% 0, 100% 100%, 0.55rem 100%, 0 calc(100% - 0.55rem));
}

.compact-stats dt {
  color: var(--muted);
  font: 900 0.72rem / 1.1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.compact-stats dd {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-weight: 900;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.instructions ol {
  display: grid;
  gap: 0.52rem;
  margin: 0;
  padding: 0;
  counter-reset: ritual;
  color: var(--muted);
  list-style: none;
}

.instructions li {
  position: relative;
  min-height: 1.55rem;
  padding-left: 2rem;
  font-size: 0.9rem;
  line-height: 1.38;
}

.instructions li::before {
  counter-increment: ritual;
  content: counter(ritual);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 1.35rem;
  aspect-ratio: 1;
  place-items: center;
  color: var(--abyss);
  background: var(--gold);
  box-shadow: 0 0 0.85rem rgba(255, 211, 105, 0.28);
  font: 900 0.72rem / 1 var(--font-mono);
}

@keyframes pixel-drift {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-1.6rem, 1.6rem, 0);
  }
}

@keyframes gem-pulse {
  50% {
    filter: brightness(1.35);
    box-shadow:
      0 0 0 0.24rem color-mix(in srgb, var(--accent) 24%, transparent),
      0 0 1.9rem var(--accent);
  }
}

@media (max-width: 1100px) {
  .hero-panel,
  .game-layout {
    grid-template-columns: 1fr;
  }

  .hud-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .control-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }

  .panel-marquee,
  .instructions {
    grid-column: 1 / -1;
  }

  .panel-section + .panel-section {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
  }
}

@media (max-width: 700px) {
  .shell {
    width: min(100% - 0.75rem, 96rem);
    padding-top: 0.5rem;
  }

  .hero-panel {
    padding: 1rem;
    border-radius: 1.1rem;
    clip-path: polygon(0 0.8rem, 0.8rem 0, 100% 0, 100% 100%, 0.8rem 100%, 0 calc(100% - 0.8rem));
  }

  .hero-panel::after {
    display: none;
  }

  h1 {
    max-width: 8.8ch;
    font-size: clamp(2.7rem, 15vw, 4.4rem);
  }

  .lede {
    font-size: 0.96rem;
  }

  .hud-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.42rem;
  }

  .hud-card {
    min-height: auto;
    padding: 0.55rem 0.45rem;
  }

  .hud-card::after {
    right: 0.45rem;
    bottom: 0.45rem;
    width: 0.38rem;
  }

  .hud-label {
    margin-bottom: 0.28rem;
    font-size: 0.55rem;
    letter-spacing: 0.09em;
  }

  .hud-card strong {
    font-size: clamp(1.1rem, 6.8vw, 1.75rem);
  }

  .game-layout {
    padding: 0.45rem;
    border-radius: 1.05rem;
  }

  .game-layout::before {
    inset: 0.45rem 0.8rem -0.9rem;
  }

  .canvas-frame {
    padding: 0.34rem;
    border-radius: 1rem;
  }

  .canvas-bezel {
    border-radius: 0.78rem;
  }

  #gameCanvas {
    max-height: 58svh;
  }

  .status-line {
    position: relative;
    right: auto;
    bottom: auto;
    left: auto;
    margin: 0.45rem 0.1rem 0;
    padding: 0.62rem 0.72rem 0.62rem 2rem;
    clip-path: none;
    border-radius: 0.75rem;
    font-size: 0.78rem;
  }

  .status-line::before {
    left: 0.72rem;
    width: 0.5rem;
  }

  .control-panel {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0.75rem;
    border-radius: 1rem;
  }

  .panel-section + .panel-section {
    margin-top: 0.9rem;
    padding-top: 0.9rem;
    border-top: 1px solid rgba(255, 245, 217, 0.1);
  }

  .gem-palette {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.46rem;
  }

  .gem-choice:last-child:nth-child(odd) {
    grid-column: auto;
  }

  .gem-choice {
    min-height: 5rem;
    padding: 2.05rem 0.38rem 0.52rem;
    text-align: center;
  }

  .gem-choice::before {
    top: 0.92rem;
    left: 50%;
    width: 0.88rem;
    transform: translateX(-50%) rotate(45deg);
  }

  .gem-choice small {
    font-size: 0.62rem;
  }

  .button-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 430px) {
  .hud-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gem-palette,
  .button-grid {
    grid-template-columns: 1fr;
  }

  #startWaveButton {
    grid-column: auto;
  }

  .gem-choice {
    min-height: 4.25rem;
    padding: 0.76rem 0.72rem 0.68rem 3rem;
    text-align: left;
  }

  .gem-choice::before {
    top: 50%;
    left: 1rem;
    width: 0.96rem;
    transform: translateY(-50%) rotate(45deg);
  }

  .compact-stats div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .compact-stats dd {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}